GB2196531A

GB2196531A - A stand for display terminals in particular

Info

Publication number: GB2196531A
Application number: GB08714892A
Authority: GB
Inventors: Veikko Lehti
Original assignee: Nokia Oyj
Current assignee: Nokia Oyj
Priority date: 1986-07-09
Filing date: 1987-06-25
Publication date: 1988-05-05
Anticipated expiration: 2007-06-25
Also published as: FI77105B; FI77105C; SE464157B; FI862892A0; GB2196531B; GB8714892D0; NO872835L; SE8702580L; DK352287A; FI862892A; NO164735C; NO164735B; DE3721191C2; FR2601435A1; US4770382A; NO872835D0; DK352287D0; SE8702580D0; DK162244C; FR2601435B1

Description

1 GB2196531A SPECIFICATION is positioned on an imaginary extension of the

axis of the supporting member above the jour A stand for display terminals in particular nal point between the supporting arm and the slide part. Consequently, the tilting of the dis THIS INVENTION relates to a stand for display 70 play terminal causes the journal point to be terminals in particular, for adjusting the view- displaced to a higher position, which, in turn, ing angle of the display terminal, comprising a causes a traction force to be exerted on the sleeve-like frame portion, an inner bore of resilient element by the supporting member.

which is at one end thereof enlarged into a Accordingly, the more the slide part is tilted, socket provided with a slide surface for a 75 i.e. the journal point between the supporting slide part to be attached to the display termi- member and the slide part is displaced up nal and provided with a slide surface comple- wards, the greater is the traction force ex mentary to the slide surface of the socket; a erted on the slide part by the resilient ele supporting member positioned in the inner ment, which in practice causes an increase in bore of the frame portion and attached to the 80 the friction between the slide part and its slide part at one end; and a resilient element counter surface provided on the frame portion.

fitted between the frame portion and the end In this way, it is possible to compensate for of the supporting member remote from the the force created when the centroid of the slide part. display terminal, which centroid in the normal It is usually required that the viewing angle 85 position of the slide part (e.g. when the dis- of a display terminal is adjustable within cer- play terminal is in the horizontal position) is tain limits, generally between -5 and +20' positioned on a line extending substantially with respect to the horizontal plane, in order through the axis of the supporting member that each operator can work at the display and the centre of curvature of the slide part terminal as ergonomically as possible. One of 90 above the latter, is displaced away from said the most widely used adjustable stand struc- centre of curvature.

tures of display terminals comprises a stand As described above, the basic idea of the and a projection formed on the bottom of the stand according to the invention is that the display terminal and having a spherical surface more the display terminal is tilted, the greater complementary to a surface formed on the 95 is the force applied by the stand to prevent stand. These spherical surfaces are arranged the tilting of the display terminal. Thus the against each other and joined by means of a holding force of the stand is maintained suffi journal which extends therethrough and for cient at all tilting positions of the terminal.

which a hole is provided in the projection In the following a stand embodying the in- formed on the bottom of the display terminal. 100 vention will be described in detail with refer So the angle of tilt of the display terminal can ence to the attached drawing, which is a par be varied with respect to the stand. However, tial, vertical section view of the stand.

this kind of stand structure has proved to be The stand shown in the figure comprises a stiff in practice. This is due to the fact that if sleeve-like frame portion 1, an inner boring 2 the spherical surface is made sufficiently large, 105 of which is conical in shape and forms at its it takes too much room; on the other hand, a larger end a socket provided with a slide sur too small spherical surface easily causes a risk face 3 for a slide part 4. A slide surface 5 of of the display terminal failing over. the part 4 is complementary in shape with An object of the present invention is to pro- respect to the slide surface 3 of the frame vide a stand of a novel type for display termi- 110 portion 1. In the case of the figure these slide nals in particular but also for other devices surfaces are cylindrical surfaces. Cylindrical which are to be tilted within certain limits, surfaces can be used in this way as slide which stand is simple in structure and reliable surfaces when the device, such as a display in use, enabling the adjustment of the angle of terminal, is to be tilted solely to and fro in tilt of the display terminal with a light move- 115 one vertical plane. If, however, the device is ment of hand. also to be tilted sideways, the slide surfaces This is achieved by means of a stand ac- have to be spherical surfaces. The structure of cording to the invention which is characterized this stand is described in more detail below.

in that the supporting member is journalled on A cavity is provided within the slide part 4 on the slide part at a point positioned eccentri- 120 the side of its slide surface 5, and an end 19 cally with respect to the centre of curvature of of a supporting arm 6 is inserted into the the slide surface of the slide part. In case of a cavity and locked therein by means of a jour display terminal stand, both the slide surface nal 10 parallel to the symmetry axis 11 of the of the socket of the frame portion and that of slide surface 5. The supporting arm 6 has a the slide part are preferably cylindrical sur- 125 generally round cross- section, whereas said faces. In the normal position of the slide part, end 19 thereof is bevelled so as to have an which in practice usually corresponds to the essentially rectangular cross-section. The jour horizontal position of the display terminal, for nal 10 is positioned eccentrically with respect instance, it is advantageous that the centre of to the centre of curvature 11 of the slide sur curvature of the slide surface of the slide part 130 face 5 of the slide part 4 so that in the nor- 2 GB2196531A 2 mal position of the slide part 4 shown in the the different spring constants set according to figure the journal 10 and the centre of curva- the weight of the display terminal can be ob ture 11 are positioned on the axis of the sup- tained easily by varying the diameter and num porting arm 6 and on an imaginary extension ber of said cups. In principle, it is, however, thereof. The journal 10 is positioned below 70 possible to use sleeves made of a compressi the centre of curvature 11. The tilting of the ble material, such as rubber, or spiral springs.

slide part 4 thereby causes the journal point Even though the supporting member as de- to be displaced upwards along a circular scribed in the embodiment is the supporting arc 21. Since the supporting arm 6 is suparm 6, it is to be understood that the use of ported on the frame portion 1 at the end 75 a wire or the like resilient member is likewise thereof remote from the slide part 4 by means possible, because the function of the support of a resilient element 8, the displacement of ing element is to transmit traction force only.

the journal point 10 in a direction away from Especially with spherical slide surfaces, such a the lower end of the frame portion 1 creates resilient supporting member may prove to be a force tending to press the resilient element 80 more advantageous than a rigid one.

8 by means of the supporting arm 6. The

Claims

resilient element 8, which in the embodiment CLAIMS shown in the figure is

formed by cup springs 1. A stand for display terminals in particular, 9, is fitted between the supporting arm 6 and for adjusting the viewing angle of the display the frame portion 1 by means of a nut 85 terminal, comprising a sieeve- like frame por screwed into the threaded end of the support- tion (1) an inner boring of which is at one end ing arm 6. In order to facilitate the adjustment thereof enlarged into a socket provided with a of the tightening effect exerted on the resilient slide surface (3) for a slide part (4) to be element by the nut 7 to a desired value, a attached to the display terminal and provided recess 20 is cut in one end face of the nut, 90 with a slide surface (5) complementary to the whereby the end of the supporting arm is slide surface (3); a supporting member (6) po passed into the recess over a constant dis- sitioned in the inner boring (2) of the frame tance when the nut is screwed up to the botportion (1) and attached to the slide part (4) tom. at one end; and a resilient element (8) fitted In order to enable the display terminal to be 95 between the frame portion (1) and the end of pivoted, the frame portion 1 is fitted within a the supporting member (6) remote from the sleeve 14 which, in turn, is supported on a slide part (4), characterized in that the sup table, for instance, by means of a supporting porting member (6) is journalled on the slide arm 15. To provide a neat appearance and, part (4) at a point (10) positioned eccentrically on the other hand, to enclose the tightening 100 with respect to the centre of curvature (11) of nut 7 and the resilient element 8 within the the slide surface of the slide part.

structure, a cover 16 is provided around the
2. A stand according to claim 1, character- lower end of the frame portion 1, which cover ized in that the resilient element (8) is ar is fastened in place by means of a screw or ranged around the end of the supporting screws 17. The display terminal, in turn, is 105 member remote from the slide part (4).

attached to the slide part 4 by supporting
3. A stand according to claim 1 or 2, char- means 12 and 13 with screws 18. The sup- acterized in that the slide surface of both the porting means 13 is provided with a protubersocket of the frame portion (1) and the slide ance projecting towards the frame portion 1, part is a cylindrical surface.

the function of the protuberance being to limit 110
4. A stand according to claim 1 or 2, char- the angle of tilt of the display terminal as acterized in that the slide surface of both the desired. socket of the frame portion (1) and the slide f The stand according to the invention has part is a spherical surface.

been described above with reference to the
5. A stand according to any of the claims 1 attached figure, in which the slide surface of 115 to 4, characterized in that in the normal posi both the frame portion 1 and the slide part 4 tion of the slide part (4), the centre of curva is cylindrical. In cases where the stand should ture (11) of the slide surface (5) thereof is be tiltable in every direction, these slide surpositioned on an imaginary extension of the faces must be spherical. It is thereby also axis of the supporting member (6) above the necessary to attach the supporting arm 6 to 120 journal point (10) between the supporting the spherical surface of the slide part by member (6) and the slide part (4).

means of a ball joint. The operation so ob-
6. A stand for a display terminal, substan- tained will be fully identical with the embodi- tially as hereinbefore described with reference ment described except that it will in this case to, and as shown in, the accompanying draw be possible to tilt the slide part in every direc- 125 ing.

tion. In the embodiment described above the
7. Any novel feature or combination of fea- resilient element 8 is formed by cup springs 9 tures described herein.

which allow the spring force to be adjusted easily, because the resilient element 8 is thereby formed by separate cups, whereby 3 GB 2 196 53 1 A 3 Published 1988 at The Patent Office, State House, 66/71 HighHolborn, London WC1R 4TP. Further copies may be obtained from The Patent Office, Sales Branch, St Mary Cray, Orpington, Kent BR5 3RD.

Printed by Burgess & Son (Abingdon) Ltd. Can. 1/87.